Locking cap



FIG. 1 is a top isometric view of a locking cap showing my new design.

FIG. 2 is a top view thereof.

FIG. 3 is a bottom view thereof.

FIG. 4 is a front view thereof.

FIG. 5 is a back view thereof

FIG. 6 is a right side view thereof; and,

FIG. 7 is a left side view thereof.

The broken lines showing a tubular structure are for the purpose of illustrating environment and form no part of the claimed design. 

CLAIM The ornamental design for a locking cap, as shown and described. 